Aromatic polyamide-type films

Details Aromatic polyamide-type films Aromatic polyamide-type films

1974-12-24

1976-06-29

Phynes, Lucille M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 47ET, 260857PA, 264184, 264212, C08G 6946

Patent

active

039666867

ABSTRACT:
Aromatic polyamide-hydrazide films, consisting of p-benzamide p-phenylene terephthalamide and/or terephthaloyl hydrazide recurring units, as major chain constituents, are removed from inorganic residue by an aqueous mixture which dissolves or swells the films, and are heated up to their crystallization temperatures in tension, giving rise to high tensile strength and modulus, good hygroscopic dimensional stability and excellent electrical insulation properties.

REFERENCES:
patent: 3472819 (1969-10-01), Stephens
patent: 3652510 (1972-03-01), Blomberg
patent: 3751546 (1973-08-01), Horoldt
patent: 3767756 (1973-10-01), Blades
patent: 3796693 (1974-03-01), Morgan et al.
patent: 3817941 (1974-06-01), Blair et al.

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